A fluorescent probe based on tryptophan-coated silver nanoclusters for copper (II) ions detection and bioimaging in cells

被引：30

作者：

Li, Shaoqing ^{[1
]}

Li, Gufeng ^{[1
]}

Shi, Hongyu ^{[1
]}

Yang, Min ^{[1
]}

Tan, Wei ^{[1
]}

Wang, Hongbin ^{[1
]}

Yang, Wenrong ^{[2
]}

机构：

[1] Yunnan Minzu Univ, Sch Chem & Environm, Educ Dept Yunnan, Key Lab Resource Clean Convers Ethn Reg, Kunming 650500, Yunnan, Peoples R China

[2] Deakin Univ, Sch Life & Environm Sci, Waurn Ponds, Vic 3216, Australia

来源：

MICROCHEMICAL JOURNAL | 2022年 / 175卷

关键词：

Silver nanoclusters; Fluorescent probe; Copper (II) ions; Bioimaging; SATELLITE GOLD NANOPARTICLES; MICROWAVE-ASSISTED SYNTHESIS; CARBON DOTS; METAL-IONS; FACILE PREPARATION; VISUAL DETECTION; EMISSION; SENSORS; PH;

D O I：

10.1016/j.microc.2022.107222

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Silver nanoclusters (Ag NCs) have been widely used in sensing and bioimaging owing to their excellent photoluminescence properties and biocompatibility. Herein, we fabricated blue fluorescent tryptophan-coated silver nanoclusters (Trp-Ag NCs) by a facile one-step method for Cu2+ detection and multicolour bioimaging. Trp-Ag NCs displayed a strong blue luminescence with a high quantum yield of 35.6% and a long lifetime of 18.48 ns. In the presence of Cu2+, the fluorescence was quenched via static quenching and charge transfer. The developed fluorescence probe for Cu2+ detection showed a high selectivity and sensitivity with a low limit detection of 0.029 mu M. Meanwhile, due to their excellent biocompatibility, the demonstration of bioimaging in cells was also provided.

引用

页数：8

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